/*
* Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
*/

#include "PlatformMouseEvent.h"

#include <wtf/Assertions.h>
#include <windows.h>
#include <windowsx.h>

namespace WebCore {

#define HIGH_BIT_MASK_SHORT 0x8000

static IntPoint positionForEvent(HWND hWnd, LPARAM lParam)
{
	POINT point = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
	return point;
}

static IntPoint globalPositionForEvent(HWND hWnd, LPARAM lParam)
{
	POINT point = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
	ClientToScreen(hWnd, &point);
	return point;
}

static MouseEventType messageToEventType(UINT message)
{
	switch (message) {
	case WM_LBUTTONDBLCLK:
	case WM_RBUTTONDBLCLK:
	case WM_MBUTTONDBLCLK:
		//MSDN docs say double click is sent on mouse down
	case WM_LBUTTONDOWN:
	case WM_RBUTTONDOWN:
	case WM_MBUTTONDOWN:
		return MouseEventPressed;

	case WM_LBUTTONUP:
	case WM_RBUTTONUP:
	case WM_MBUTTONUP:
		return MouseEventReleased;

#ifndef _WIN32_WCE
	case WM_MOUSELEAVE:
#endif
	case WM_MOUSEMOVE:
		return MouseEventMoved;

	default:
		ASSERT_NOT_REACHED();
		//Move is relatively harmless
		return MouseEventMoved;
	}
}
PlatformMouseEvent::PlatformMouseEvent(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool activatedWebView)
: m_position(positionForEvent(hWnd, lParam))
, m_globalPosition(globalPositionForEvent(hWnd, lParam))
, m_clickCount(0)
, m_shiftKey(wParam & MK_SHIFT)
, m_ctrlKey(wParam & MK_CONTROL)
, m_altKey(GetKeyState(VK_MENU) & HIGH_BIT_MASK_SHORT)
, m_metaKey(m_altKey) // FIXME: We'll have to test other browsers
, m_activatedWebView(activatedWebView)
, m_eventType(messageToEventType(message))
, m_modifierFlags(wParam)
{
	m_timestamp = ::GetTickCount()*0.001; // GetTickCount returns milliseconds

	switch (message) {
	case WM_LBUTTONDOWN:
	case WM_LBUTTONUP:
	case WM_LBUTTONDBLCLK:
		m_button = LeftButton;
		break;
	case WM_RBUTTONDOWN:
	case WM_RBUTTONUP:
	case WM_RBUTTONDBLCLK:
		m_button = RightButton;
		break;
	case WM_MBUTTONDOWN:
	case WM_MBUTTONUP:
	case WM_MBUTTONDBLCLK:
		m_button = MiddleButton;
		break;
	case WM_MOUSEMOVE:
#ifndef _WIN32_WCE
	case WM_MOUSELEAVE:
#endif
		if (wParam & MK_LBUTTON)
			m_button = LeftButton;
		else if (wParam & MK_MBUTTON)
			m_button = MiddleButton;
		else if (wParam & MK_RBUTTON)
			m_button = RightButton;
		else
			m_button = NoButton;
		break;
	default:
		ASSERT_NOT_REACHED();
	}
}

} // namespace WebCore
